Step-by-step explanation:
1 foot x3 is 36, and 36 divided by 4 is 9. 9 is your answer
:)
X2+5x+y2-y=-2
X2+2*5x2+(5/2)^2-(5/2)^2+y2-2*y/2+(1/2)^2-(1/2)^2=-2
(x+5/2)^2+(y-1/2)^2-13/2=-2
(x+5/2)^2+(y-1/2)^2=9/2
So centre =(-5/2,1/2)
Radius=(9/2)^(1/2)
The first option is correct
6.40x+9.90(154-x)=1230.90
Solve for x
X=84 for child
154-84=70 for adults
